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Home/Categories/IT Management/hysteria
icon of hysteria

hysteria

Open source alternative to Astrill VPN, NordVPN and Mullvad VPN

  • 22.7K stars
  • MIT
  • Active this month
  • Last commit 8 days ago

Last verified Oct 20, 2026

Secure network access with a self-hosted QUIC proxy that disguises traffic as HTTP/3 and stays fast on lossy or high-latency links.

Visit websiteGitHub22.7K starsDeploy on Hostinger
image of hysteria
TL;DR

hysteria is a censorship-resistant proxy built on a customized QUIC protocol that masquerades as standard HTTP/3 traffic, making it hard to detect and block without collateral damage to legitimate traffic. MIT licensed, written in Go, and tuned for high performance on unreliable or lossy networks.

Read the full breakdownHide the full breakdownWho it is for, how it works, trade-offs and the FAQ
who it's for

Who hysteria is for#

Developer behind filtered network

Routes development traffic through a personal Hysteria server on a VPS to access blocked resources behind a heavily filtered corporate or national network.

Journalist in restricted region

Maintains secure communications that are not detectable as proxy traffic in a country with active deep-packet inspection.

Self-hosted infrastructure operator

Adds Hysteria as a backup tunnel for team members who need reliable access from restricted network locations.

Security researcher

Uses Hysteria's protocol documentation to implement a compatible client and test censorship circumvention techniques.

Team deploying private proxy

Deploys Hysteria with custom authentication to give employees private proxy access with per-user traffic statistics.

the problem

The problem it solves#

Standard proxies using TCP-based protocols are easily fingerprinted and blocked by deep packet inspection systems. Networks with high packet loss make TCP-based tunneling slow and unreliable, especially on mobile or satellite connections. Users in restricted environments need a proxy that performs well under both censorship and poor connectivity, without relying on protocols that are trivial for ISPs to identify and drop.

how hysteria solves it

How it solves it#

HTTP/3 masquerade against DPI

Masquerades as standard HTTP/3 (QUIC) traffic, making it indistinguishable from normal web browsing to deep packet inspection systems

SOCKS5, HTTP, TProxy, and TUN in one binary

Supports SOCKS5, HTTP proxy, TCP/UDP forwarding, Linux TProxy, and TUN modes from a single binary

QUIC-based, tuned for lossy networks

Built on a customized QUIC implementation tuned for unreliable and lossy networks where TCP suffers head-of-line blocking

Cross-platform binaries

Cross-platform builds for every major OS and CPU architecture

Built-in auth and per-user traffic stats

Built-in custom authentication, traffic statistics, and access control for server operators managing multi-user deployments

Open protocol spec for third-party clients

Well-documented protocol spec enables third parties to build compatible client applications

strengths · trade-offs

Strengths and trade-offs#

Strengths

  • HTTP/3 masquerade has high collateral cost to blockHTTP/3 masquerade is harder to block selectively than most proxy protocols because blocking it causes widespread collateral damage to legitimate QUIC/HTTP3 traffic
  • Single binary for all proxy modesA single binary covers a wide range of proxy modes without requiring separate tools for different use cases
  • 21.2K stars, active community21.2K GitHub stars with active maintenance and an active Telegram community and Discussions forum
  • Open specs for third-party clientsWell-documented specifications lower the barrier for third-party client authors

Trade-offs

  • -Requires self-hosted server in unrestricted locationRequires running your own server in an unrestricted location; there is no built-in server-discovery or relay network like some commercial VPN services offer
  • -Higher CPU/battery than TCP proxies on stable networksThe QUIC-based approach consumes more CPU and battery than simple TCP proxies in stable, low-latency network conditions
  • -Some edge-case rough spots236 open issues at last check; some edge-case platform configurations may have rough spots
versus alternatives

hysteria vs alternatives#

hysteria is an MIT-licensed self-hosted proxy that uses a customized QUIC protocol for fast, censorship-resistant TCP and UDP traffic.

vs NordVPN: NordVPN is the easier choice for consumers who want managed apps, a commercial server network, and support without running infrastructure. hysteria is better when you control the server, need SOCKS5, HTTP proxy, TUN, TCP or UDP forwarding modes, and want traffic shaped to look like standard HTTP/3.

vs ExpressVPN: ExpressVPN focuses on a polished managed VPN service with its own client apps and protocols such as Lightway and WireGuard support. hysteria asks you to operate the server yourself, but gives developers protocol documentation, custom authentication, traffic stats, access control, and deployment flexibility.

vs Tailscale: Tailscale is built for WireGuard mesh networking, identity, ACLs, and device-to-device access. hysteria is not a mesh VPN; it is better for proxying through unreliable or censored networks where QUIC behavior and HTTP/3 masquerading matter, while Tailscale remains better for zero-config private network access across a team.

tech stack · detected from GitHub

What it's built on#

Languages
GoPython
Frameworks
Flask
frequently asked

FAQ#

How does Hysteria compare to Shadowsocks or V2Ray?

Hysteria uses UDP/QUIC and mimics HTTP/3 traffic at the protocol level. Shadowsocks and V2Ray primarily operate over TCP and are more easily identified by traffic-analysis tools. On high-latency or lossy networks, Hysteria's QUIC base typically outperforms TCP-based proxies significantly.

Do I need to run my own server?

Yes. Hysteria does not include a public relay network. You need a server in an unrestricted location running the Hysteria server binary. The documentation at v2.hysteria.network covers setup for common VPS providers.

Does it work on mobile?

Hysteria has an active third-party app ecosystem with iOS and Android clients available, though the core project ships only a command-line binary. Check the third-party apps section in the official documentation for current options.

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Hostinger

Run hysteria on your own server

Self-host hysteria on a Hostinger VPS.

Deploy on Hostinger

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